A google search of "Fred Zoepfl" shows that he has been heavily targeted by Rossi supporters:
Hi Walter Pegeto ,
You generalise again.
Torkel is one guy and i am not sure if he is a big Rossi supporter. I do know that he highlighted the doubtful defence by the clowns of Industrial Heat against Rossi. And that he researched the shady characters that smeared Rossi in that proces. Torkel has been right on a couple of occasions and i would not become a fan of Fred Zoepfl just because he, like you, thinks Rossi is a crackpot.
Perhaps focus more on what people in the field do and less on what they say.